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CSS Masking - mask-border-source Property
The CSS property mask-border-source sets the source image that is used for creating an element's mask border.
This source image can be divided into different regions using the mask-border-slice CSS property.
Possible values
The CSS property mask-border-source can have following values:
none: No mask border is applied.
<image>: Reference of the image to be used for mask border.
Applies to
All HTML elements. And in case of SVG, it applies to the container element excluding the <defs> element and all graphics elements
Syntax
/* Keyword value */ mask-border-source = none; /* <image> values */ mask-border-source = url(<image-filename>); mask-border-source = linear-gradient(to bottom, red, yellow);
Note: The chromium-based browsers support the old version of this property mask-box-image-source with a prefix, i.e., -webkit.
-webkit-mask-border-source = url(image.png);
CSS mask-border-source - Basic Example
The following example demonstrates the use of the CSS property mask-border-source, where an image is passed as the mask border using the url(), which is applied as the mask border for the element.
<html> <head> <style> .with-mask { -webkit-mask-box-image-source: url("images/logo.png"); -webkit-mask-box-image-slice: 20 fill; -webkit-mask-box-image-width: 25px; /* width */ -webkit-mask-box-image-outset: 2px; /* outset */ -webkit-mask-box-image-repeat: repeat; /* repeat */ mask-border-source: url("images/logo.png"); mask-border-slice: 20 fill; /* slice */ mask-border-width: 25px; /* width */ mask-border-outset: 2px; /* outset */ mask-border-repeat: repeat; /* repeat */ } </style> </head> <body> <h1>The mask-border-source Property</h1> <h3>With mask-border-source</h3> <div class="with-mask"> <img src="images/scenery2.jpg" alt="mask border image" width="300" height="200"> </div> <h3>Without mask-border-source</h3> <img src="images/scenery2.jpg" alt="mask border image" width="300" height="200"> </body> </html>
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